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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 711 · 40 questions
TalentJR

Robot tip (Holds ÷ uses): Hours = capacity in mAh ÷ current in mA (2000 mAh ÷ 500 mA = 4 hours). Percent: blocks = 100% ÷ % used per block; time = blocks × minutes per block. Cells in series add up: 4 cells of 1.5 V give 6 V.

NameDateTime takenScore ___ / 40
  1. 1.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) keeps going for ever (c) explodes (d) turns into a car
  4. 4.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) petrol pumps (d) wind-up keys
  5. 5.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  10. 10.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  17. 17.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  21. 21.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  26. 26.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  27. 27.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a rechargeable battery (d) a tiny magnet
  28. 28.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery is at 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) charge it again (d) give it to an adult

Answer key

  1. 7.5
  2. 20
  3. goes back to its dock
  4. sunlight (solar panels)
  5. 2
  6. 3
  7. 15
  8. 25
  9. mAh
  10. 250
  11. 5
  12. 18
  13. 40
  14. 110
  15. 12
  16. a power cable
  17. 5
  18. 5
  19. 50
  20. 6
  21. 150
  22. 3
  23. 5
  24. 180
  25. 9
  26. 1
  27. a rechargeable battery
  28. 20
  29. 12
  30. 20
  31. 8
  32. 200
  33. 20
  34. 20
  35. 6
  36. 2
  37. 7
  38. 3
  39. 6
  40. give it to an adult

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